Which two Cisco products allow the use of a dial plan with E.164, H.323, SIP, and DNS? (Choose two.)
A. Cisco Expressway
B. Cisco Unified Communications Manager
C. Cisco Unified Border Element
D. Cisco IM and Presence
E. Cisco TelePresence Video Communication Server
CIPTV1 book page 300
Table 6-2 confirms A and E
E looks to be correct but without the DNS part, you can’t make calls with DNS’s.
Cisco VCS Addressing Schemes: SIP URI, H.323 ID, and E.164 Alias
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/dialplan.pdf
I would also say A is correct because Expressway is configured on voice-gateways(routers) that can T1 cards.